diff options
| author | James Morse <[email protected]> | 2018-08-21 21:54:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2018-08-22 10:52:46 -0700 |
| commit | df865e8337c397471b95f51017fea559bc8abb4a (patch) | |
| tree | 44508e59a03482004bf85d3dfdad753e0f10372d | |
| parent | 36f062042b0fd9f8e41b97a472f52139886ca26f (diff) | |
fs/proc/kcore.c: use __pa_symbol() for KCORE_TEXT list entries
elf_kcore_store_hdr() uses __pa() to find the physical address of
KCORE_RAM or KCORE_TEXT entries exported as program headers.
This trips CONFIG_DEBUG_VIRTUAL's checks, as the KCORE_TEXT entries are
not in the linear map.
Handle these two cases separately, using __pa_symbol() for the KCORE_TEXT
entries.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: James Morse <[email protected]>
Cc: Alexey Dobriyan <[email protected]>
Cc: Omar Sandoval <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | fs/proc/kcore.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index e64ecb9f2720..66c373230e60 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -384,8 +384,10 @@ static void elf_kcore_store_hdr(char *bufp, int nphdr, int dataoff) phdr->p_flags = PF_R|PF_W|PF_X; phdr->p_offset = kc_vaddr_to_offset(m->addr) + dataoff; phdr->p_vaddr = (size_t)m->addr; - if (m->type == KCORE_RAM || m->type == KCORE_TEXT) + if (m->type == KCORE_RAM) phdr->p_paddr = __pa(m->addr); + else if (m->type == KCORE_TEXT) + phdr->p_paddr = __pa_symbol(m->addr); else phdr->p_paddr = (elf_addr_t)-1; phdr->p_filesz = phdr->p_memsz = m->size; |